Lacrimal duct obstruction disease is a common disease in Ophthalmology, it’s incidence increases these years, it’s main symptom is epiphora, and it can cause acute or chronic dacryocystitis, and become a potential source of infection in eye, so the treatment of this disease is a hot issue in Ophthalmology. Previous treatment methods were based on traditional external approach surgeries, but in recent years, with the improvement of medical standards and patient aesthetic demand, a series of new therapies gradually replaced the traditional surgeries. This article will do a review on one of them -endoscopic surgery, from the perspective of its history, application status, advantages and disadvantages.